Patents by Inventor Frederick Borden Hadtke

Frederick Borden Hadtke has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11313651
    Abstract: A deployable ballistic shield is disclosed. The deployable ballistic shield includes a plurality of layers formed of a high impact anti-ballistic Aramid material. The shield is selectively configured between a stowed condition, in which the plurality of layers are in contact with an adjacent layer, and a deployed condition in which the plurality of layers are suspended in a spaced apart relation with a gap formed between the adjacent layer. A handhold is defined at a top end of the shield. Aa foothold may be defined at a bottom end of the shield. The deployable ballistic shield may be used by law enforcement, military, and other personnel as a protective ballistic barrier. Gaps between the plurality of layers serve to absorb the kinetic energy of a ballistic round.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: April 26, 2022
    Inventors: Frederick Borden Hadtke, Coert Hadtke Pease
  • Publication number: 20210254934
    Abstract: A deployable ballistic shield is disclosed. The deployable ballistic shield includes a plurality of layers formed of a high impact anti-ballistic Aramid material. The shield is selectively configured between a stowed condition, in which the plurality of layers are in contact with an adjacent layer, and a deployed condition in which the plurality of layers are suspended in a spaced apart relation with a gap formed between the adjacent layer. A handhold is defined at a top end of the shield. Aa foothold may be defined at a bottom end of the shield. The deployable ballistic shield may be used by law enforcement, military, and other personnel as a protective ballistic barrier. Gaps between the plurality of layers serve to absorb the kinetic energy of a ballistic round.
    Type: Application
    Filed: November 23, 2020
    Publication date: August 19, 2021
    Inventors: Frederick Borden Hadtke, Coert Hadtke Pease
  • Patent number: 3978725
    Abstract: A speed indicating device or gauge is mounted on the forward flat upper surface of the water ski. This indicator is so mounted that the user of the ski during water skiing may view this speed indicating device. The indication is achieved by a pitot tube-like device in which one end of the tube is connected to the meter and the other end is disposed on the ski underside and at the rear thereof. The tube is filled with liquid to a point near the rear of the tube where a flexible diaphragm seals the tube. The diaphragm is actuated by the pressure of the fluid flow created by the rate of travel of the ski in the water.
    Type: Grant
    Filed: January 7, 1976
    Date of Patent: September 7, 1976
    Assignee: Robert Hain Associates, Inc.
    Inventor: Frederick Borden Hadtke